Electromagnetic device.



S. C. BRYANT. BLEGTROMAGNBTIG DEVICE. APPLIATIQN FILED MAY 29, 1912.

Patented l Oct. 21, 1913.

ururrno STATES PATENT orales.

STANLEY C. BRYANT, OF CHICAGO, ILLINOIS, ASSIGNOR TOBRYANT ZINC COMPNY,

` 0F CHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS.

ELEGTRMAGNETIC DEVICE.

incensi.

Speoination of Letters Patent.

Patented Oct. 21, 1913.

To all whom t may concern:

Be it known that I, STANLEY C. BRYANT, a citizen of the United States,and a resident of the city of Chicago, in the county of Cook and Stateof Illinois, have invented a new end usetul Electromagnetic Device, ofwhich the following is a specification.

`This invention relates to an electro-magnetic device, particularly to adevice known as a bell of the locomotive type.

The primary object of this invention is to provide a means forminimizing the liability of the electro-magnetic device to becomeinoperative, by reason of an open circuit at the reciprocating circuitcontroller, usually employed with such a device when 4used in theoperation of bells.

Other objects and advantages will appear asthe description of theinvention progresses, and the novel fea-tures of the invention will beparticularly pointed out in the appended claims.

In describing the invention in detail, reference is had to theaccompanying drawings,.wherein I have illustrated a preferred physicalembodiment of my invention, and whereinlike characters of referencedesignate corresponding parts throughout the several views, and inwhichq Figure 1- .is a front elevation of the form of bell andassociated mechanism selected 4by applicant to illustrate his invention;Fig. 2, is a side elevation of the mechanism and bell shown by Fig. 1,with some parts broken away, and an electro-magnet coil and itsconnections removed; Fig. 3, is a schematic view showing a circuitarrangement for controlling the mechanism shown by Figs. 1 and2. l i

. 1 designates a gong, of the locomotive bell type, vfastened by meansofthe bolt 2 to the upper end of a curved standard- 3,

which is fastened at its two ends, by means of bolts 4, to a supportingbase 5. The curved standard 3 supports, at its upper end, the pin 6,which isrigidly vattached to the standard at either end as best shown inFig. 1, so that it cannot rotate.v Upon the pin 6 a two arm lever 7 ispivoted, having at one end the hammer 43, and being connectedy at theother end, by means of a pin 9, with a member 10. The two armflever 7 isprevented from moving longitudinally of `v The cores 27 pin 6, byy beingplaced between two collars 11, both of which are fastened rigidly bymeans of pins 12 to the pin 6. A rod 13 passes 4through a hole in thelower end of member 10 and bears a collar 14 at its upper end, so thatthe rod 13 cannot become detached from the member 10, thus forming aslidable. connection with the 'member'. 10. The rod 13 is attached bymeans of pin 15 to the cross bar 16, land is .long enough to be insertedin a hole 17 in the base 5, which will serve to guide the .rod 13. Therod bears the adjust-able collars 18, 19 and 20; the c'ollar 18 beingadapt-- netic attraction of cores 30, also best shown in Fi 1. The coresl3() have brass pins 31 inserte therein to prevent cores 28 and 30 fromactually coming into contact. one: with the` other and, consequently,being-held together by residual magnetism.l 4'jlEhe cores 127, ,2 8` and30 are surrounded by coils of' insulatedl wire 32 and 33, which, when'acurrent ofy electricity flows therethrough, cause a magnetic iiuxto iiowin the cores and through the magnetic yoke 34 which is attached to .thebottom4 of the cores k30 by means of screws 35. When a magnetic' iuxHows in the path above described, the cores 27 and 28 are drawndownwardly.

Two standards, 36 and 37, are attached to the base 5 by means of screws38 and 'are attached, one to the other, byv means of cross piece 39,which is attached to each at y the end of an outstanding arm 40, bymeans of rivet'41. An outstanding arm 42, on each of the standards,forms va support for pivot pin 23. Screws 43 pass `through the upperends-of the standards 36 and 37 and into the ends vof a magnetic corehaving the pole pieces 44. The core, having the pole pieces 44, supportsthe coil vof insulated wlre 45. armature 46, which, when lin theposition The two armed lever 22 supports an W11? end 59 n springarm 61,'WhiChJiS-SuppOrted' by cross The spring armvv center throwing device,-that fis, .when -T` l crank has been moved `30 60 just 'passes the shownin Figs- 1 and2, rests 'upon t f a-rds 49:

tion therebetween. j

as shown in 2, is; out of range of the magnetic attraction ofv the polepieces L14,.-

thereto, by means-of rivetfl?, the' contact 4.8,-wliich, when in the."position as Standards-49 and 4"in placel` The stan ards inthp'sitionof.springs 53 and 54. he rank '25.'has an upper arm 57, "the 'grooved uppersurfacevv 58 which a roller 60, `borne byja piecef39fis adapted tobear." j 6 1,a c t `ing through the roller l 60,.causes the T crank25 toassume either one of two positiohs.; wi th the roller bearing on' thelowest part ofthe groovedsurface 58'or'the'roller '25- surface 59.

bearing on thelowe'st Dart-of the grooved The spring arm l61, actingthrough the roller- 60, also acts as an overfrom the ,position shown inFig. 2,. tofa position'where roller ri e 62, th 61, acting through, theroller I novement,*ls/.0* that 'theroller "60 can bear upon thelewestportion of grooved surface 59.4 The vT-'crank25 bearsa metallicconduchi. .g1 member.-

positio l63, "which,

' and`54f-but Iwhen in the otherf position,

;thQ. .T

crank may assum, with the i grnemberffin the dotted line;l position asshowninfFig. .'2, .does -notmake electrical connection between springs53'and 541Cl :Binding post 64 is connected, by. means Q fwirel65,-"wi'tl1 one end of coil 33 the Vother-'-endi lof coil 33 beingvconnected by means of wire 70.

nected to binding lmeans. of.. wire 66 with bindingpost 52.

Binding post' 51is connected,.bymeans of .Wire 67, with one end'of-'coil 32; `the other end of' coil 32'being connected with bindingpost68, bysme'ans offwire 71. 4One-end of coil 45' isconnected lbymeahsof wire 69;

the other-end of coil 45Jis connected with binding post 68, by

the source. The current nowin'gin the above cause'hammer 8 to strike thego wo standl and 50andf make's'metallic connec?.

" 61,"actingthrough the .roller 60,

v caused rmember 63 with. springs 53 and 54 to thejdotted line75position 'as vshown-in F ig. 2,.thus" breaking` .fwlshalso'.S-rre'toclam the upon: the base". 5.and areattachedthereto, byfmeanslof the-` bolts 51 and- 52, which serve asbindingposts crews 55`-and 56 for adjustespring armv 60, 'causes theV T' crank to movequickly tothe limit lof itswith binding post 64,

parts as shown in Figs.-

path: binding4 'post 64, wire 65, coil 33wire 66,l bindingv connected'to binding posts current may How las follsss-f-fbinding post 130 tracedA'pathwouldcausev cores 27 and 28 to vdrawn downwardly, thereby, causingrody 13.'.to .bedrawn downwardly, hich would g 1, but just before thehammer 8 struck the collar'19, acting through the arm 24 of the Tera-nk25, and assisted bv the spring arm would have to move from in .contactthe circuit heretofore traced, and consequently, allowing the hammer 8by reason of its weight to fall back into the p osition as shown in Fig,2. Just before Y had reached its final position of rest, as shown' inFig. 2, the sleeve 20, l acting through the arm 24 of thevT crank 25,and assisted by spring' arm 61, acting'through the roller-60, would havebetween springs 53 and "54, which, of course, would again cause thecores 27 'and 28 to be 'drawn downwardly,.so that just so long as-thebindin'g posts 64vand 68 were connected 9 0 with a source ofelectrical energy/ fthe gong 'l would be continually struck-by the ham-.mer.8.

' The type of tendieren illustrates is particularly adapted, for what isknown as 95' highway-crossing signals, which are. used to `notifypedestrians and others ofthe appioachI of 'atrain .to a Ahighwaycrossing. .When used for such'purposes it may remain idle for a exposedto the weather as it must needs be,

yalthough protected as carefully as possible,

:a strong wind isliable to shake the standard upon-'which the bell.mechanism is placed, so' violently, thatthe hammer 8 is'caused to 105oscillate and'thereby' cause the `rod 13 and the arm 24to bemoved and-it'is very possible-that the member. 63 will'beleft in the dotted lineposition asshown'in Fi; 2. .In

casemember 63 were Ileft inthe dol-:ated liney 110 position as shown 'inFig. 2, then a subsequent application of electricenergy to the z bindingposts 6.4 and 68 wouldnot cause' currentyto ilow to c oils 32. and $3inthe path` above traced, consequently, ing ofv gong '1. would takeplac'exV` The device herein illustrated vsigned vfor use as asafety/'device ways must, in order to secure eingfv de,.- ponfrailfavorable attention, befso designed that any oppor- 120 tunity fora failure to 'oper'atemust be en tilely removed.

vApplicanthas pro'i'del a means for pref 'iie'bell to operate yunderoutlined'. Its mode 125 .'o f operation isl-.as follows: If member63venting a failure of the conditions above.

remains in .the dotted line posit-ion 4as shown inf-Fig.vv 2,' then whenelectrical energy is..

6l.. and GS-the gong 1, the

the hammer causedlthe member 3 5 -63 to again form an 'electricalconnectionl great length of'time and being 10o y,no sounda light and theringing wie@ cadence, wire ce, tuning pest' b2, stendardf'),bridgingmember/i8; sfteird lard-50, binding post l, wire 67, coil32;'Wire ,H i.l, c

.i i, and binding post (.itothe otherterininal oit the source. lt willbe .seenfthet the {p1-31thy nected :from binding posts 6&1 and 68.- lirepath is' not 'Iclosed constantly, lmwever, form .upon the downwardmovementoi" rod 13, the sleeife 18 contacts with the. end 2l oit twoarmed lever 22 and raises bridging member i8 from in Contact withstandards i9 and thus breaking the connection heretofore traced and byraising; hrm 46, brings it within the range of influence of coil 45;which thereupon holds the armature lo andthe bridging member i8 in therest position until the source ot energy is disconnected Jfrom "l indingposts fri and 68 when the armature le end bridging" meinbcr i8, byreason of grzir'ity; fall to the position as shown in the figures. ltwill thus be seen that if by any chance the member should be lett in thedotted line position7 es shown in llig. 2, with the hammer 8 in theposition shown in Fig. 2; an application oi' energyto bind-- ing posts84; und GS Ywould cause beininer 8 to be raised motive biglie eycrossing bell; il i'e member G3 gets out ol" step 'with the Iro( thebell becomes ii'iopieretive, but in. at sentis type of bell il themember 63 gets out est with the rod 13, it is possible, as hss heretovfore been shown, to start the bell ringing. rlhis is an extremelyValuable Vfeature, t'or many lrighwey crossing bells are locatedinrural. districts; far removed from 'the head quarters cip-the maintainerwho has charge of such bells, so that if a bell becomes inoperative, forany .reason7 it will gei'ierally'be severalv days before the maintainercan get to the bell and remedy the ditiiciil"cyu A bell of applicnntstype, however, is practically selit maintained.

.Although applicant has herein shown his invention as applied to amechanism for causing a haininer to strike a gong., it is not to beunderstood that such is the only use which may be made of applicfintsinvention for by 'those skilled the art it will be readily seen that theprinciple underlyingapplicants invention is just as applicable to themechanism for causing the :dashing ci a light as is now commonly done inhighway crossing,l signals, or for both the flashing of of a bell. TheeinH ployinent of the apparatus for such double purpose merely requiringthe addition of a contacting means to cooperate with member 63 us isWell understood.

Although applicant has shown his shuntl breaks i 'in electrical yartVwell, understand; tiret, one,

' cuit controller governed by said n lin the ordinary tyco of loco-l'circuit from Iniernber esxbeing .brolenfjatf two ple-cee; it is of.course Ato c beunderstoefl i that it c not .at alli-necessary te, maltetwjo, the shunt circuit; ,es those; skilled;

breel' e suiicient orthepurposef. .Although appl has shown the circuitlier the electro-magnets 32 asbeing broken at, two springs 53 e ot; itWell "understood byth'ose .skilled n the art that it is not allnecessary to'here two breaks in the cir-- cuit one will eccoinplishithesaine purpose. Although epplicmit has particularly described theconstruction of one physicalein bodilnent oli 'his invention, and'explained the operation and principle thereof; neyerthe less, applicantdesires to'heve' it understood that the 'form selectedismerelyillustrative, but does not exhziust the possible physicalembodiments ol? the idea of rneans'underly'- ingI his inventionn f W hatl claim es new and desire to secure by Letters Patent of the UnitedStates, is

L ln an ele troniagnetic device a source of electricity, enelectro-magnet in circuit, with said source, a men'iber eperuble by saidelectromiagnet in one direction and operable by gravity in the oppositedirection; n cir- 'anibe'r in circuit with said electro-magi and' saidsource, s circuit shouting said circuit con troller, ineens controlledby member to open 'said shunt circuit; means to r vuin said shunt cirovit open. l v

2. 'in elcetro-umg etic device; u source.

electricitfn an electro-nimmst in circuit with said source, a memberoperable by said electro-magnet in one'direction and operable bygratuity in opposite direction, a circuit controller f .lcd by saidmember in circuit with seid tro-magnet and said so" a circuit slinntingseid circuit ccntr ,lli 3 another circuit controller in said lastmentionedcircuit, said member adapted to open said last mentioned'circuit controller, and means energized from 'the sour/ce to retain saidlast mentioned circuit controller open. c t i 3. ln en electro-magneticdevice: source of electricity; an Ielectro-1neignet in circuit with saidsource; e member operable by said electroniagnet in one direction endoperable by gravity' in the opposite direction; a circuit controllergoverned by said member in circuit with said electro-magnet and saidsource; a circuit sbunting' said circuit controller; another circuitcontroller in. seid last ientioned circuit; pircted member bearing anyarmature by' which said other circuit controller controlled;` saidfirst mentioned member adapted to Contact said pivoted member whenoperated by seid electro-meg netand break seid shunt circuit; secondelectro-magnet energized :trom said source

